i think VIABTC scammed me also,
Just bought a contract from them in order to use their the "transaction accelerator" cuz i have a BTC tx thats unconfirmed for almost 30+ hours, so far they didn't enable that customer-only function for me yet, and no e-mail answer aswell.
My another 2 cents, almost a day passed and still no any response from viabtc, but fortunately the transaction that was stuck finally got confirmed.
cheers!!
Public disclaimer, I am not in any way a Bitcoin Cash supporter, although I am thankful for ViaBTC acceleration service. I just wish they did not need to make it about politics when they put up that landing page notice a while back. Anyway, despite my personal feelings towards such things, I highly doubt that they would cheat you for a few dollars when they already provide the service free anyway.
I guarantee you will come back here later and confirm that they in fact have credited you. It is the weekend, come on.